Pre-rendered or are those equivalent to "in-game" / dynamic environments?
I do - though I've still killed them when neither of us are moving and I'm just standing on a rock. I've tamed animals before (including my previous saber before it got killed by the hackers) doing it this way, so not sure why it's not working now. Though I did manage to get one unconscious the other night...but it was right next to another saber when it went down, and as I was killing the 2nd saber (lower level), I was apparently still within the hitbox for the unconscious saber and killed it.